Answer:
D
Step-by-step explanation:
You would do D because the other options aren't that random. Randomly choosing employees <em>is</em> a random sample and will give you a valid answer.
 
        
                    
             
        
        
        
Answer:
315
Step-by-step explanation:
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ll
l
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l
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Answer:
The answer is 49
Step-by-step explanation:
the square = 10×4= 40
The triangle = 6×3= 18 >> 18÷2 = 9ft
40+9= 49ft
 
        
             
        
        
        
Answer:

Step-by-step explanation:
Given

Required
The equivalent
We have:

Expand

Collect like terms


Hence, the equivalent is:

 
        
             
        
        
        
We need to FOIL that out and then get it into standard form to see what our A, B, and C are.  FOILing gives us 

.  If we move the 7 over by subtraction and set it equal to 0, we have 

.  In order to avoid a negative leading coefficient, we can change all the signs to get 

 so A = 1, B = 0, C = -18, first choice above.